Closure



Jan 9, 1928 I 1,441,697. G. 1. MACK.

CLOSURE.

men IAN.19, 1921. a SHEETS-SHEET 1.

Patented den. 9, 1923. Y

lFih

GEORGE JOSEPH MIACK, F BROOKLYN, NEW? YORK, ASSIGNOR TO U. S.ZNDUSTRIAL. ALCOHOL (30., A GOBPDRATION OF 'WEST VIRGINIA.

CLOSURE.

Application filed January 19, 1921. Serial No. 438,383.

a cover or door of the kind above referred to which is provided with alocking mechanism that will effectively prevent unauth0r ized accessthrough the same.

The object is especially to provide an ettective locking means whichcannot be readily broken as would be the case it the locking mechanismwere situated on the outside of the enclosure and were secured to thesame by a flexible attaching means.

A further object is to provide a locking mechanism for such covers ordoors which is so arranged that the lock cannot be opened without thenecessity of breaking a seal which in this instance is a revenue stampthat is situated over the keyhole oi the lock ing mechanism located onthe inside of the cover or door.

Still another object is to provide a looking mechanism of this characterwhich is located on a cover screw-threaded in the dome oi? the tank car.

Furtherobjects will appear from the detailed description of theinvention hereinafter contained. I

There are many ways of carrying out my invention but I have shown oneform of the same in the accompanying drawings, in which i Figure 1 is avertical section of a dome plate carrying a cover made in accordancewith my invention.

Figure 2 is a bottom plan view of the same. t

Figure 3. is a plan view oil-the lock carried by the cover.

Figure 4c is a plan view showing the interi or mechanism of the same.

Figure 5 is a section taken on line ol Figure 3.

Figure 6 is a section taken on line 6-6 of Figure 5.

33 on thelocl; casing.

l isure '4' is a plan view ot the stamp can I device.

Figure 8 a plan view ot the opened position.

Figure 9 is :1 plan view or the hey-hole plate fitting on the inside ofthe cover.

l-igure 10 is a planview ot' the key which is used for operating thelook.

In the drawings 1'. have shown a dome plate 1 ha ing a plurality ofholes 2 around its edge to permit the same to be riveted to the dome ofthe tankcar. Thedonie plate 1 has an opening 3 surrounded by adownwardly directed screw-threaded flange t to receive a screw-tlu-eadedflange- 5 fitting: therein carried by a cover 6. The cover 6 has alifting handle 7 atits center and a rotating handle 8 near its edge, aswell as a plurality of ears having holes 10 therein to aid in the movingof the cover. Around the periphery of the cover there may be a gasket 11of leather or other similar material which its agniust an annularprojection 12 on the dome plate 1 to make an airtight joint.Furthermore, the cover 6 has a nuni-r ber of laterally directed holes 13to act as vents in opening the tank car.

Attached to the inside of the cover 6 there is a lock casing 14 which isheld in place by screws 15. The lock casing 1%} has a later-; allymovable bolt 16 adapted to pass through an opening 17 in the flange 5into a recess 18 in toe dome plate 1. This lock may be of any desiredconstruction but by way of example it may have the following operatingparts, in addition to the boltreterred to above, The bolt 16 carried bya sliding plate 19 iittin against the bottom of the loelc casing ld.which has a guidingslot 20 cooperating with a projection 21 on the lockcasing. Said plate 19. "furthermore. is provided with a recess 22 tocooperate with a member 23 on a he 2% which is adapted to be insertedover a stem 25 on the lock casing that into the barrel of the key, llponthe sliding plate 19 there is a proje ction 26 that projects into anopening 2 10- cated in three tumblers staid tumblers being pivoted upona pin 29 carried by the lock easing. These tumblers, furthermore. havesprings 30 whichrest against a stop on the lock casino; The stop 3].provided with a screw-threaded recess and there are two similarlyrecessed members and 'lfhese three recessed same in members supportadiaphragm plate 3 1- which is held in place by screws 35. The plate 34has holes 36 for the passage of the screws 15, a hole 37 for the pm 29and a key-hole 38 to receive the key 2 1. Furthermore said plate has atone end therof a slot 39 into which projects a flange d on a slidingplate 41, in such a manner that the flange 4E0 normally rests upon therear end of the bolt 16.

The plate 4-1 is guided by means out a strap 42 screwed to the diaphragmplate 3 1 and is normally pressed forwardly by means of spring 43surrounding a rod 44 on'the rear of the plate 4.1. which rod passesthrough a' hole in the lock casing 14. Upon the top of the sliding plate41 there is an inverted L- shaped catch 46 which is arranged tocooperate with an I apertured tongue 17 arranged to project downwardlythrough the cover 6 -The said key-hole plate is hinged to a staandcarried by a hinged key-hole plate 4.8.

tionary key-hole plate t9 secured to the top of thecover by means 01screws 50 passing I through the same, through the cover and into aninner key-hole plate 51.

' a revenue stamp 56 is designed to be placed and locked in position byfour corresponding pins 57 carried by the hinged key hole' plate 48around key-hole 58. Again, upon the top ofthe hinged key-hole plate a8,there is a rotary cover 59 supported by a pivot 60 on which there islocated a coiled spring 61 resting in a recess 62 in the rotary cover59, so that thecover 59 will normally occupy aposition over the key-hole58. 1

In the operation or my invention, after thetank car has been filled withthe liquid to be shipped, the cover 6 is placed over the same eitherwith the aid of the ears 9 or the handle 7 or both, and is then screwedinto place by use of thehandle 8 until the gasket 11 fits against thetop of the flange 12 and the bol 16 is opposite the recess 18 in thedome plate 1. Thereupon the key 2451s lIISGItBCl and the bolt 16 1Smoved into the recess 18 thus locking the cover in place;

The key is then withdrawn and a revenue stamp is placed over the keyhole55, after which the hinged key-hole plate d8 is moved into its lowerposition, thus causing the apertured tongue 47 to engage with the l--shaped projection 46 which springs into the aperturein thetongue 47 dueto the pressure of the spring 413. This at the same time holds the stamp56 in place overthe keyhole and perforates it with the aid of the teeth57. In order to gain access to the tank car now it is necessary to firstswing the its location on the interior of the tank car cover 59 to oneside and then insert'the key intothe look through the keyhole 58, therevenue stamp 56 and the key-holes 55, 53 and 38. ll henever the tankcar is opened in this way or an unauthorized attempt is made to gainaccess thereto by inserting opening devices into the lock, the openingor attempted opening of the tank car can v be readily seen by thefracture of the revenue stamp 56. Furthermore, it would be extremelydifficult to gain access to the tank car without the proper key as itwould be a diflicult matter to in any way move or damage the lockingmechanism because of c ver. The presence of the screw-threaded flanges aand 5 which engage with one another, strengthens the locking mechanismin a very etlfective'manner also. Once, however, that the bolt 16 hasbeen withdrawn by the operation of the lock with the key 24;, the cover6 may be readily unscrewed so as to' give access to the tank car, and bythe withdrawal or the bolt 16 the tongue i7 will be released from theprojection 4L6, thus permitting the hinged key-hole plate 48 to be movedoutwardly so that the old stamp can be removed. The parts are now inposition for closing the tank car again in the manner above described.

Above I have describedmy invention in detail, but it is to be understoodthat many changes will be made therein within the scope of my invention.

I claim: I p

1. a cover for tank cars having a locking mechanism fixedly mountedthereon, said locking mechanism having a movable looking member, a keyfor operating the same and amovable stamp-holding key-hole plateconstructed to be held in place by the looking mechanism so as 'toprevent the removal or the stamp when locked by the locking member.

2. A cover for tank cars having a screwthreaded fastening means andalocking mechanism fixedly mounted thereon, said locking mechanism havinga movable locking member, a key for operating the same and a movablestamp-holding key-hole plate constructed to be held in place by thelocking mechanism soas to prevent the removal of the stamp when lockedby the locking meniber.

3. A cover for tank cars having a locking mechanism fixedly mountedthereon, said locking mechanism having a movable lockingmember, a keyfor operating the same I and a movable stamp-holding key-hole plateconstructed to be held in place by the lock-' ing mechanism so as toprevent the removal of the stamp when locked by the locking member, saidstamp being positioned so as to cover the key-hole.

at. A cover for tank cars having a screw threaded fastening means and alocking mechanism fixedly mounted thereon, said locking mechanism havinga movable locking member, a key for operating the same and a movablestamp-holding key-hole plate constructed to be held in place by thelooking mechanism so as to prevent the removal of the stamp when lockedby the locking member, said stamp being positioned so as to cover thekeyhole,

5. A cover for tank cars having a locking mechanism located on theinterior thereof, said locking mechanism having a movable lockingmember, a key for operating the same and a movable stamp-holdingkey-hole plate having a depending portion held. in place by a catchactuated by the locking mechanism so as to prevent the removal of thestamp when locked by the locking member.

6. A cover for tank cars having a screwthreaded fastening means and alocking mechanism located on the interior thereof, said lockingmechanism having a movable locking member, a key for operating the sameand a movable stamp-holding key-hole plate having a depending portionheld in. place by a catch actuated by the locking mechanism so as toprevent the removal of the stamp when locked by the locking member.

7. A cover for tank cars having a locking mechanism located on theinterior thereof, said locking mechanism having a movable lockingmember,a key for operating the same and a movable stamp-holding key-hole platehaving a depending portion held in place by a catch actuated bythealocking mechanism so as to prevent the removal of the stamp whenlocked by the locking member, said stamp being positioned so as to coverthe key-hole.

8. A cover for tank cars having a screwthreaded fastening means and alocking mechanism located on the interior thereof, said lockingmechanism havinga movable locking member, a key for operating the sameand a movable stan1} )-l10lding key-hole plate having a dependingportion held in. place by a catch actuated by the locking mechanism soas to prevent the removal of the stamp when locked by the lockingmemher, said stamp being positioned so as to cover the key-hole.

9. The combination of a movable locking member com ir'iing a combinedbolt and spring catch, a key for the same, and a movable stamp-clampingplate having a member adapted to be engaged by the spring catch whenlocked;

10. A closure having associated therewith a fixed locking mechanism,said locking mechanism having a movable locking member, a key toroperating the same and a movable stamp-holding key-hole plate cnstrnctedto be held in place by the locking mechanism so as to prevent theremoval of the stamp when locked by the locking member.

11. A closure having a locking mecha nism fixedly mounted thereon, saidlocking mechanism having a movable lockingmem ber, a key for operating;the same and a movable stamp-holding key-hole plate constructed to beheld in place by the locking mechanism so to prevent the removal of thestamp when locked by the locking member.

12. A closure having a locking; mechanism located on the interiorthereof, said locking mechanism having a movable locking member, a keyfor operating the same and a movable stamp-holding key-hole plateconstructed to be held in place by the lockin 5;; mechanism so as toprevent the removal of the stamp when locked by the locking member.

13. A cover for tank cars having a screw threaded fastening means and alocking mechanism located on the interior thereof, said lockingmechanism having a movable bolt, akey for operating the same, a twoparthinged key plate, one part of which may be swungback onthe hinge toadmit a stamp between the two plates, a dependingportion on the movableplate, a catch actuated by the said belt for locking the said dependingportion when the tank is locked, and a spring for moving the catch intolocking; position.

In testimony that I claim the foregoing, I have hereunto set my handthis 6th day of January, 1921.

GEORGE JOSEPH ll'IACK.

